Seiko Cal. 3866 - 402

The Seiko 3866-402 represents an important milestone in Seiko's 1973 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-afc1836b301b]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1973

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